function myCtrl($rootScope, $scope, $http, knowtify) {
...
};
6) Add the CSS ID of the Inbox element as YOUR_BUTTON_ID (no # prefix) in your controller, along with the email and unique ID of the user, and push it to Knowtify. This initializes the button that your user will interact with. Review http://api.knowtify.io/docs/get-started-with-inbox for more information.